title: USA faces chronic vaccine shortages.
mesh_terms: D002648:Child; D003140:Communicable Disease Control / Q000331:legislation & jurisprudence; D033161:Government Regulation; D006801:Humans; D017589:Immunization Programs / Q000191:economics; D014481:United States; D014612:Vaccines / Q000191:economics / Q000600:supply & distribution*
chemical_list: D014612:Vaccines